Model results -- EU+ countries

summary statistics: residuals

perhaps not the best for countries w/ small area (e.g. Luxembourg, Malta)

outliers & influential data points

standardized residuals, "number of standard errors away from regression line" (normalized so SD = 1) quantify how large the residuals are in standard deviation units. abs(std resid) > 3 is sometimes a threshold for outlier detection

first, very positive residuals (predictions are an underestimate, or, more people want to relocate from A to B than expected)

and the very negative residuals (predictions are larger than observed values)